Keyboard settings are lost
The symptom
You are opening the HippoEDIT as usual but none of the shortcuts working. Commands, Navigation, Deletion, Inserting, Tabs etc. The only working is numeric and alphabetical keys.
The problem description
It is a known bug. For faster loading, HippoEDIT caches keyboard shortcuts settings between sessions. But in some cases, the cache files are written corrupted, and on next start, no shortcuts can be restored. Unfortunately, the bug is hardly reproducible (I need to be able to trigger the lost) and because of that not yet fixed.
The solution
Please, close HippoEDIT, delete all he*.tmp files in your Windows %TEMP% directory and restart HE. The issue shall be fixed.